Remove unnused arrays in TruncBeta* functions

[jarathomas]

The family of TruncBeta* methods in the InsilicoSampler create arrays, but do not use them:

        // create a new transpose probbase matrix
        double[][] new_probbase = new double[this.C][this.S];
        for(int s=0; s<this.S; s++){
            for(int c=0; c < this.C; c++){new_probbase[c][s] = this.probbase[s][c];}
        }

These should be removed. Here are the instances in the code:

InSilicoVA/InSilicoVA/java/Insilico/src/sampler/InsilicoSampler2.java

Line 364 in 9a2eb17

double[][] new_probbase = new double[this.C][this.S];

InSilicoVA/InSilicoVA/java/Insilico/src/sampler/InsilicoSampler2.java

Line 452 in 9a2eb17

double[][] new_probbase = new double[this.S][this.C];

InSilicoVA/InSilicoVA/java/Insilico/src/sampler/InsilicoSampler2.java

Line 541 in 9a2eb17

double[][] new_probbase = new double[this.S][this.C];